LY Corporation · Report #988332

Webview in LINE client for iOS will render application/octet-stream files as HTML

Validstatus

mediumseverity

$500bounty

37upvotes

5 Jul 2021disclosed

Summary

Due to misconfiguration in the webview of LINE client for iOS, the data with header "Content-type" as "application/octet-stream" was treated as HTML. This could lead to a malicious Javascript execution, resulting a Cross-site scripting attack.

How it was found

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